XAFS and LIBD Investigation of the Formation and Structure of Colloidal Pu(IV) Hydrolysis Products

Pu(IV) oxyhydroxide colloid growth is investigated with XAFS and LIBD. From combined results a model of colloid formation is proposed, which leads to a face-centered cubic Pu sublattice having cation defects, as observed with EXAFS, and a linear dependency of log [Pu(IV)] on −log [H+] with slope −2,...

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Published in:Inorganic chemistry 2004-07, Vol.43 (15), p.4708-4718
Main Authors: Rothe, Jörg, Walther, Clemens, Denecke, Melissa A, Fanghänel, Th
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Language:English
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description Pu(IV) oxyhydroxide colloid growth is investigated with XAFS and LIBD. From combined results a model of colloid formation is proposed, which leads to a face-centered cubic Pu sublattice having cation defects, as observed with EXAFS, and a linear dependency of log [Pu(IV)] on −log [H+] with slope −2, in accord with LIBD. The solubility for Pu(IV) measured with LIBD is close to the lower limit of the solubility curve from previously reported data.
doi_str_mv 10.1021/ic049861p
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title XAFS and LIBD Investigation of the Formation and Structure of Colloidal Pu(IV) Hydrolysis Products
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